20978880

Names of 20978880

• Cardinal: 20978880 can be written as Twenty million, nine hundred seventy-eight thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.097888 × 10⁷

Factors of 20978880

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 64

Divisors of 20978880

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 41 48 52 60 64 65 78 80 82 96 104 120 123 130 156 160 164 192 195 205 208 240 246 260 312 320 328 390 410 416 480 492 520 533 615 624 656 780 820 832 960 984 1040 1066 1230 1248 1312 1560 1599 1640 1681 1968 2080 2132 2460 2496 2624 2665 3120 3198 3280 3362 3936 4160 4264 4920 5043 5330 6240 6396 6560 6724 7872 7995 8405 8528 9840 10086 10660 12480 12792 13120 13448 15990 16810 17056 19680 20172 21320 21853 25215 25584 26896 31980 33620 34112 39360 40344 42640 43706 50430 51168 53792 63960 65559 67240 80688 85280 87412 100860 102336 107584 109265 127920 131118 134480 161376 170560 174824 201720 218530 255840 262236 268960 322752 327795 349648 403440 437060 511680 524472 537920 655590 699296 806880 874120 1048944 1311180 1398592 1613760 1748240 2097888 2622360 3496480 4195776 5244720 6992960 10489440 20978880
• Sum of all divisors σ(n): 73523856
• Sum of proper divisors (its aliquot sum) s(n): 52544976
• 20978880 is an abundant number, because the sum of its proper divisors (52544976) is greater than itself. Its abundance is 31566096

Bases of 20978880

• Binary: 1010000000001110011000000₂
• Hexadecimal: 0x1401CC0
• Base-36: CHNEO

Squares and roots of 20978880

• 20978880 squared (20978880²) is 440113406054400
• 20978880 cubed (20978880³) is 9233086332006531072000
• The square root of 20978880 is 4580.2707343563
• The cube root of 20978880 is 275.7998969661

Scales and comparisons

• 20,978,880 seconds is equal to 34 weeks, 4 days, 19 hours, 28 minutes.
• To count from 1 to 20,978,880 would take you about five hours!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 20978880 cubic inches would be around 23 feet tall.

Recreational maths with 20978880

• 20978880 backwards is 08887902
• The number of decimal digits it has is: 8
• The sum of 20978880's digits is 42
• More coming soon!